Customized Electronic Product Accessories by Metal Injection Molding Process MIM

August 06, 2025

Trademark: Mimo
Transport Package: Carton
Specification: Sus
Origin: China
HS Code: 9021100000

Powder Metallurgy Processing Technology
Powder metallurgy is a metal forming process that involves heating metal powder below its melting point. Although this technique has been around for over 100 years, it has gained significant recognition in the last 25 years as a key method for producing high-quality components with diverse applications.

This success stems from the advantages offered by other metal forming technologies like forging and casting, including improved material utilization, complex shapes, and near-net shape size control. These benefits support sustainable development, making powder metallurgy a recognized green technology.
 
In reality, powder metallurgy encompasses various techniques for manufacturing semi-dense and fully dense assemblies. The traditional method, known as sintering, is commonly used to produce parts like planet carriers. In the case of metal injection molding (MIM), the process involves hot pressing to create intricate components such as connecting rods. Additionally, metal additive manufacturing is gaining popularity.
 
These processes, along with Others like spray forming, roll compaction, and rapid solidification, typically involve particulate metals rather than powders. Modern advanced materials often consist of ceramics, ceramic fibers, or metal compounds instead of pure metals or alloys.

Metal Injection Molding (MIM) is an established and proven technique for producing small, complex, high-performance metal parts. It serves as a cost-effective alternative to traditional methods such as machining, investment casting, and powder metallurgy. MIM excels in applications requiring intricate shapes and properties like high strength, magnetic permeability, and corrosion resistance—features not achievable with plastics or light metal alloys. Its single-step consolidation potential makes it a competitive option compared to stamped or machined parts. Many limitations of conventional metalworking can be overcome through MIM.

Today, MIM is widely used in critical applications across industries such as automotive, aerospace, consumer electronics, dental instruments, electronic heat sinks, hermetic packages, electrical connectors, industrial tools, fiber optic connectors, fluid spray systems, hard disk drives, pharmaceutical devices, power hand tools, surgical instruments, and sporting equipment.

Why MIM is the Best Choice?

Cost-Effective Design Flexibility
  • Enables the production of complex shapes that are too costly to make using other methods.
  • Supports mass production of micro-sized parts efficiently.
  • Can create features that are impossible to achieve with investment casting, such as small holes, thin walls, and fine surface details.
  • Achieves net shape features like internal/external threads, profiled holes, detailed textures, knurling, engravings, and markings.
  • Offers scalable production from thousands to millions of parts quickly and efficiently.
Material Variety and Integrity
  • Provides superior strength, magnetic, and corrosion properties due to high density, outperforming conventional powdered metal, plastics, and die-casting.
  • Produces net shape components from difficult-to-process materials like superalloys, tungsten alloys, and titanium.
  • Ensures isotropic and homogeneous microstructure for consistent material properties.
  • Capable of creating alloys not available in wrought or cast form.
  • Allows for engineered density materials suitable for weight-critical applications.
Suzhou Mimo Metal Technology Co., Ltd., founded in 2006, is located in the beautiful Yangtze River Delta region of Suzhou Wujiang. The company covers 9,500 square meters and includes mixing, injection molding, degreasing, and sintering workshops, as well as a testing center. With a commitment to "technological innovation, cooperation, sincerity, and efficiency," Mimo aims to become a leading domestic manufacturer in the MIM industry.

The following document outlines the various alloy families used in the Metal Injection Molding (MIM) process. These include:
 
- Austenitic stainless steels (ideal for smart watch parts and SIM card tray MIM)
n 304L
n 316L
 
- Martensitic stainless steels
n 420
n 440C
 
- Precipitation-hardening stainless steels
n 17-4PH (ideal for SIM card tray MIM)
 
- Iron-based alloys
n Fe2Ni0.5Mo
n Fe4Ni0.5Mo
n Fe8Ni0.5Mo
n FN50
 
The list represents popular products within the portfolio, but it is not exhaustive. If you need information on an alloy not listed, please contact our sales department for availability details.

How to Determine the Ratio of Metal Powder and Binder?

As the solids content increases, so does the product's viscosity. When the solids content reaches 62%, the viscosity rises sharply after injection, indicating the maximum allowable solids content. If the binder is insufficient, gaps between particles may occur, affecting the powder's integrity. Conversely, if the binder is excessive, the solid content becomes too low, impacting the debinding and sintering process.

How to Control Costs During the MIM Process?

Metal injection molding is cost-effective when producing complex, small metal parts in large quantities. What else can we do to reduce costs further?

Purchasing Cost

The purity of powder metallurgy products is generally between 95% and 98%. The procurement cost of raw materials equals the cost per gram of metal multiplied by the part's volume and density. To manage costs, precise calculation of the part's volume is essential.

Production Process

Different product requirements mean varying pressure levels, which affect the cost. For MIM, the equipment used is less intensive, and speed is crucial for efficiency.

Mold Cost Control

When selecting mold materials, high-pressure options should be chosen to ensure accurate product specifications.


Contact us within 24 hours.
Customized Electronic Product Accessories by Metal Injection Molding Process MIM

Aaron Sale of Jiangsu Mimo Metal Co., LTD.
TEL: 0512-63120634 | Mob: +86 15968841153
Web: www.mimomim.com
Address: Dong Gu Road No. 28, High Shear Zone, Tongli Town, Suzhou.
 

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